(Last Updated On: July 17, 2019) Table of Contents Description:The components and tools used in this project can be purchased from Amazon, the components Purchase links are given below:MQ-2 Sensor:Pinouts: Circuit Diagram:Programming:Watch Video Tutorial: Description: This project is based on the Gas leakage detection or smoke detection using MQ-2 gas/smoke sensor, Arduino Uno and GSM … Continue reading Arduino Gas leakage detection and SMS alert MQ-2 sensor